ASoC: Convert ak4104 to devm_kzalloc()

Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/ak4104.c

@@ -261,7 +261,8 @@ static int ak4104_spi_probe(struct spi_device *spi)
 	if (ret < 0)
 		return ret;
 
-	ak4104 = kzalloc(sizeof(struct ak4104_private), GFP_KERNEL);
+	ak4104 = devm_kzalloc(&spi->dev, sizeof(struct ak4104_private),
+			      GFP_KERNEL);
 	if (ak4104 == NULL)
 		return -ENOMEM;
 
@@ -271,15 +272,12 @@ static int ak4104_spi_probe(struct spi_device *spi)
 
 	ret = snd_soc_register_codec(&spi->dev,
 			&soc_codec_device_ak4104, &ak4104_dai, 1);
-	if (ret < 0)
-		kfree(ak4104);
 	return ret;
 }
 
 static int __devexit ak4104_spi_remove(struct spi_device *spi)
 {
 	snd_soc_unregister_codec(&spi->dev);
-	kfree(spi_get_drvdata(spi));
 	return 0;
 }